The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 1988
Filed:
Feb. 15, 1985
Masaaki Kitajima, Hitachiohta, JP;
Masahiro Takasaka, Hitachiohta, JP;
Yoshiharu Nagae, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An information input/output display device comprising a dielectric which is held in a portion between one electrode and the other electrode opposite to each other and which has at least a first state and a second state of unequal capacitances, means to change the capacitance of the dielectric, capacitance holding means to hold at least temporarily a value of the capacitance of the dielectric in the first state, and means to compare the value of the capacitance of the dielectric with the value of the capacitance held by the capacitance holding means, whereby information can be read out without being affected by fluctuations in a distance d between the electrodes or/and in an ambient temperature T.